Exciton-polaritons of a 2D semiconductor layer in a cylindrical microcavity
arXiv:1911.07312 · doi:10.1063/1.5143244
Abstract
We describe exciton-polariton modes formed by the interaction between excitons in a 2D layer of a transition metal dichalcogenide embedded in a cylindrical microcavity and the microcavity photons. For this, an expression for the excitonic susceptibility of a semiconductor disk placed in the symmetry plane perpendicular to the axis of the microcavity is derived. Semiclassical theory provides dispersion relations for the polariton modes, while the quantum-mechanical treatment of a simplified model yields the Hopfield coefficients, measuring the degree of exciton-photon mixing in the coupled modes. The density of states (DOS) and its projection onto the photonic and the excitonic subspaces are calculated taking monolayer MoS 2 embedded in a Si 3 N 4 cylinder as an example. The calculated results demonstrate a strong enhancement, for certain frequencies, of the total and local DOS (Purcell effect) caused by the presence of the 2D layer.
References in corpus (18)
- Van der Waals heterostructures
- Coupled spin and valley physics in monolayers of MoS2 and other group-VI dichalcogenides
- Exciton Binding Energy and Nonhydrogenic Rydberg Series in Monolayer WS2
- Excitons in atomically thin transition metal dichalcogenides
- Strong light-matter coupling in two-dimensional atomic crystals
- Probing Excitonic Dark States in Single-layer Tungsten Disulfide
- Dielectric screening in two-dimensional insulators: Implications for excitonic and impurity states in graphane
- Exciton-polaritons in van der Waals heterostructures embedded in tunable microcavities
- Strong exciton-plasmon coupling in MoS2 coupled with plasmonic lattice
- A Primer on Surface Plasmon-Polaritons in Graphene
- Exciton band structure of monolayer MoS2
- Room temperature Tamm-Plasmon Exciton-Polaritons with a WSe2 monolayer
- Reduced dielectric screening and enhanced energy transfer in single and few-layer MoS2
- Direct Observation of Whispering Gallery Mode Polaritons and Their Dispersion in a ZnO Tapered Microcavity
- Exciton-polaritons in 2D dichalcogenide layers placed in a planar microcavity: tuneable interaction between two Bose-Einstein condensates
- Near-field relaxation of a quantum emitter to 2D semiconductors: surface dissipation and exciton polaritons
- Exciton-polaritons in transition-metal dichalcogenides and their direct excitation via energy transfer
- Pronounced Purcell enhancement of spontaneous emission in CdTe/ZnTe quantum dots embedded in micropillar cavities